For those who are unaware, GameStop still accepts trade-ins of PlayStation 2 hardware, games, and accessories; soon, however, this will not be the case.
As evidenced in this photo by Reddit user eGORapTure, GameStop stores will not accept any of these items after June 1st; the story has since been corroborated by numerous GameStop stores, including my own.
Production of new PlayStation 2's ended in early January; GameStop's discontinuation of trade-ins for the system is essentially the final nail in the coffin for the system. In its 12-year lifespan, it sold 150 million units and amassed a library of over 10,000 games, solidifying it as one of the most popular consoles in gaming history.
I imagine that this also means that GameStop will soon stop selling used PS2 products; they will likely sell their remaining stock, then exit the PS2 business.
So, if you still have any PlayStation 2 consoles, controllers, or games hiding at your house, you may want to go trade them in to GameStop before it's too late. If you're still a PS2 fan, this may be a good chance to hit up your local GameStop; as they try to phase out PS2 merchandise, used games and systems may become heavily discounted, and it may be your last chance to purchase these titles in a store.